1153324661 has 2 divisors, whose sum is σ = 1153324662. Its totient is φ = 1153324660.

The previous prime is 1153324657. The next prime is 1153324687. The reversal of 1153324661 is 1664233511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 911677636 + 241647025 = 30194^2 + 15545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153324661 - 2² = 1153324657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153324631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576662330 + 576662331.

It is an arithmetic number, because the mean of its divisors is an integer number (576662331).

Almost surely, 2^1153324661 is an apocalyptic number.

It is an amenable number.

1153324661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153324661 is an equidigital number, since it uses as much as digits as its factorization.

1153324661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 1153324661 is about 33960.6339899596. The cubic root of 1153324661 is about 1048.6982086242.

The spelling of 1153324661 in words is "one billion, one hundred fifty-three million, three hundred twenty-four thousand, six hundred sixty-one".